Electric-arc lamp



Nov. s, 1927. 1,648019 L. S. KUBIAC 1926 5 Sheets-Sheet. 2

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Nov. s, 1927. 1,648,019

L. S. KUBIAC ELECTRIG ARG LAIIP il Nov. 1926 5 eis=5hegt. s

Nov. 8, 1927.

L.. S. KUBIAC ELEG'IRIC ARG LAIIP the same ancl builcling upof the Patented Nov. 8, 1927.

UNITED S TATE S LESTER s: KUBIAC, OFYOUNGSTOWN 011110.

EIJECTRIC-ARC LAMP.

Application fi1ed November 9, 1926. Serial N0. 147,206.

This invention relates to arc lamps, und 'moie particularlyto the multiple type of lamp, the primary object being to provicle Wl1at may los termecl an uncler-slung coul! struction, involvirig a clutch carrying bar o1? braclteb common to both carbons (Which we believe to be e-ntirely new in the art), ancl to so mount und equip tl1is bar as to avoid any suclclen 01' abrupt starting o1 stopping 0 of the same*by reas0n of the more 01 Floss unavoiclalole violent moveme-nt of the armamire in fl1e solenoid, chus eflecting an absolutely uniform operation ormovement of tl1e carbons, as Well as a slow gentle spaiationof avoicling the more or less noisy ancl disagreeable sputtering and snapping usually caused by the separati on of the carbons.

VW1ile, so f2u as I am a-Ware, the arc 'lamps 110W in uso are all operatecl through 21 more o1less complex system or seri' s of le.vers, bell-crgmks, walking beams, 'etc. mountecl abovethe solenolcl, I am aware'thafi various attenapts at un'der-slung control have losen macle,- but Without satisfwtouy results so faras my observations go.

A practical e1hloodinient of myinVe'ntion is' shown in the accom]oanymg clraw1i1'gs 111- WhichFig. 1 ls affont elevation; Fig. 2 is an end elVation with the case shoWn in section;

Fi=g. 3 is a 1*ear elovation disclosinf; 'the Yh8OSCELC, o1: resisting elernents, disp0secl outsicle oft'he case enol0singtho a1cs 01' lights; Fig. 4 isa plan view parti'ally in sectionon Wire diagmam;Fig"l 5 is fragmentaryview; 1

' lehsion's 11 und 12 on the clutoh bar 10 is a holt ofipin 25 prOvideclat its upper end With heacl 26, ancl upon which is mounted a coil showing in detailthegeneral arrangement 21'nl assembly of the val 1ous parts and elements ofthe operatmg mechan1sm; ancl' F1g.

6 is' a fragment'ary view, showing in cletail the spring contfollecl bar 28 mountecl 011 the I. house the mechanism 01: my cle'vice in What may.be termecl an opehosupporting; fmme, designated generally as; F; 'ancl cousisting of the tp Pl'llfl, orcap, 1,fl 1e lottom. 01 lo21se,- 2, tho back walll 3, tl1e* upright cofner posts 4-4, Which tie the top ancl bottom plats 1 2I'Ild 2'together und the=:

plate,

two intemnediate columns orposts 55, also 1*igicll'y seoured to ihe top ahclloottom plates of the l1amo 4 Mounted upon*the-= posbs 5-5, intermecliate thoir encls, isthe%plate 6 und tl1e.solenoid 7 is securelyheld in inverted position beclutcli pleite 10 is the po st 22,- provicled a1; its

- pi uof acl jntl1e ost 18 as hereinbefore explmnecl.

= Sllcl2lbly mountecl 'beneath the c'oil spring 2727,- is a flat bar '28 provicled With counter-bores 2929 for tw eon this plte antl the top plate 1 of the ito bothcllboll5, und being provicled witl1 its long guiclgbearings, insures absolutely synchronous movement of the carbons as well as absolute alignment oftravel of the Same.

Secu1ecl to the upper face of the clutch bar 10 are2the ordinary dash-pots 1616,- and the clasl1-pot VP1SEOI1 stem 17 is swingingly secured to the upper face of the bottom plate 2 of tl1o frame. Rigiclly securecl t0 th'e upper face of the bottom plate 2 is the post 18, proviclecl als its uppor encl with a; slot Within which the counter-weight lever 19 is pivotecl bythe pin 20; This lever carries at one en'd the counte1 weight2l, while at its opposite end lt is pro- Vided with a transverse sl0t for a purpose to be statecl in the' following paragraph.

Rigidly secure'cl to the extension 11 on the upper ond With a slo't 23 und also witha pin 24-. pass1-ng through the s'lot und adapted 1:0 ne engagecl' by ehe slotte tl encl0f tl1e leve r 19 Alsoi rji'glclly securecl to euch of the' exspring' 27.

the rece1 tion o1 tl1e lower end's of thespringS: 27 --27- designecl to prevent contact or fric den lietwen be bar und the bolts. (See lTig. 6.)

: hearmat-ure tem 30 carries at its lower encl cross-htaaclor yoke 31 whicl1 is securely fastened to the bar 28 by means of rivets 1 3232 Fig. 4. 1

Olovioflsllyl an exa'ct meohanical equiva'lent to this construction Would be tomakethe cross-liead ouyoke 81 longer and mount it directly upon the bolts 25-:25, fuhus doing 'away With the bar 28 entirely. Bub this is rnerely amatter of convenience in manufacture.

Slidably mountecl upon the corner posts 44 of the frame are the oppositely disposed carloon holclers 83-33 to Which the upper carloons 15 are securecl loy screws* For the purpose of insulat1ng the oarbons ancl oporating ele1ni1fis from the frame of the clevice, I use the plates or sheets 35-35 V of asbestos o1 other suitable material. Fig. 5.

Firmly Securecl to, anclsuspencled from, the bottom plate or base 2 of the frame is the suppo1ting rocl 36, carrying at its lower enclan acljustable cross-bar 37 having a relatively long tubular guicle bearing 38 hold in position loy the screw 39, said cross-bar being proviclecl at each encl with a carbon holder 40 to, Which oho lower carbons 4141 aie secured loy sorews 4242.

The rheostat, or resistance elements, is representecl by 43, and 44 inclicates c-he ordinary shunt switoh po regulate the strength of the current pass1ng through che rheostat.

The operation of my device, briefly statecl,

' is substantially as follows:

I/Vhen the solenoid is energizecl, the armature will travel pwardly in the' solenoid, oarrying with i@ the bar 28 against the pressure of th springs 2727 but without rnoving she bar 10 until the compression o1 the springe is suflioient to -overcome the grzivity iesisance of the bar 10, the clutbh elenents ancl the carbons, and the resistanco of the clash pots, less the gravityweight o1 the counter-weight 21 (Which Will then move downwartlly), at which time the bar 10 will move' upwarclly, ancl the clutoh elements carried by the bar Will liftthe uppe r carbons separating thern from the lower carbons, ancl starb the builcling1ip of the arc.

I1; is obvious that in this operation, by roason of fhe action of the springe: 27-27,

ihe Separation of the oarbonS Will be slower l ancl more genfle than if adcomplished directly frorn the snclclen starting' of the ar- 'mature.

The relat1ve movement of the var1ous operating elements are so acljus'ted that When the arinature reaohes what is known as the ponit 0f magnet1o balance 1n the soleno1d,

t-l1'earcWill bei of jaroper length for service. As tho carbons lonrn away, however, the length otf' the arc gradually incroases and the strength of the ourrent Will Correspondingly cl ocrease unt il the magnetic strength of thosolenoid is no longer suflicient t0 mn-y its loacl'at which ti.me the armature will begin to drop, thus permit ting the clutchbar 10 to fall, but uncler the cushioning effect of tho springe 2727, and gently remrclecl also, by the gravity resistance of' the Weight2l (wh1ch Will then move up wardly), until the clutch element 14 oomes in contact with the insulating plate or sheet 35, which Will release its grip upon the upper carbon ancl permit the latter to fall until itagaitn comes, in coi1taotwith the lower carloon, thus, theoretically, eliminaing the arc ancl extinguishing the light, although the .new in the art. y

I claim:

l. In an aro lamp, a carbon control mechanism consisting of a horizontal lifting bar 'slidably inounted upon upright supports and carrying ab eaoh encl clutch elements adapted to engage the carbon, an'd ineans f'or aotuating said lifting bar.

2. In an aro lamp, a carbon control mechanism consisting of a horizontal lifting bar sli'dably mounted upon upright supports and carrying at each end olutoh elements adapted t o engage the carloon, and a solenoid unit for aotuating said lifting bar.

3. In an arc lamp, a carbon control mechanism con'sisting of a horizontal lifting bar sli dably mountecl upon upright supports and carrying ateaoh end olutch elements adapted o engage the carbon, an'd a solenoid unit for actuating saicl lifting bar, the armaturo stem of said solenoid unit having a yielding 0011- nection with said lifting bar.

- 4. In an arc lamp, a carbon controlmechanism oonsisting of a horizontal lifting bar sli'dably mounted upon upright su'pports and carrying at each encl olut ch elementsadaptecl to engage'the carloon, a solenoid unit for acbuacing said lifting bar, the'armeiture stem of said solenoid being provided at i'ts outer end witha oroSs-head slidably mounted 1'1p0n heacled bolts carried by' saicl liftihg bar, and a ooil spring mounted upon each of said holt-s between its head anal sai'doross-head.

5. In an arc lamp, a carbon oontrol mechan1sm cons1st1ng of a hor1zonbal lifting bar sliclably mounted upon upright supports und oarryihg at e'ach encl clutch elments adapted to'engage the carbon, ancl means for aotuating said liftingloar, saiclaotuating means inoluding a lever fulorurnecl intermedizite its ends, and carrying ab one en'd a counter- Weighb and ab its other encl having a loose rengagement wich saicl lifting bar.

6. In an aro lamp, aoarbon oontrol mechanism consis'ting of a horizontal liftin"gbar slidably mountecl upon upright Supports and carrying at each end olutch elements-adapted F0 engage the carbon, and means for actuat- 1ng said lifting bar, said aotuating means y consisting of a, solenoid unit, and a, 1ever fuI- sisting of asolenoid unit, the armature steni 0f said solenoi'd having a yielding connect-ion wit-h said lifting bar, und a lever fulcrumed intermediate its ends and carrying at 0ne 1 end a count'er-vveight and at its other end having a loose engager nent with said lifting bar.

In testimony whereof I hereunto afliX my signat-ure.

' LESTER s. KUBIAC. 

